Synthesis and Optical Properties of CuO Nanocrystals with Controllable Shapes and Size

Neelinder Goraya,Satbir Singh,T Srivastava,S Kakkar,S Rani

doi:10.1051/matecconf/20165701007

Abstract

Highly dispersed copper oxide (CuO) nanoparticles had been successfully prepared by a hydrothermal technique where different adding temperatures of NaOH were taken. The as-prepared CuO nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and Raman spectroscopy. The results showed that the adding temperature of NaOH has an important influence on the shape and size of CuO nanocrystals The influence of reaction conditions on morphology of CuO nanocrystals was discussed. Furthermore, different shapes of obtained CuO nanocrystals exhibit different Raman properties.

Highlights

Nano- structured transition metal oxides (MOs) are the indisputable prerequisite for the development of various novel functional and smart materials
X-ray diffraction (XRD) pattern (Fig. 1) of the products obtained is identical to the single-phase CuO with a monoclinic structure and the diffraction data are in good agreement with JCPDS card of CuO (JCPDS 80-1268)
No peaks of impurity are observed in the XRD pattern

Summary

Introduction

Nano- structured transition metal oxides (MOs) are the indisputable prerequisite for the development of various novel functional and smart materials These transition MO nanocrystals have been attracting much attention for fundamental scientific research, and for various practical applications because of their unique physical and chemical properties [1]. CuO nanostructures are considered as electrode materials for the next-generation rechargeable lithium-ion batteries (LIBs) because of their high theoretical capacity, safety, and environmental friendliness They are promising materials for the fabrication of solar cells because of their high solar absorbance, low thermal emittance, relatively good electrical properties, and high carrier concentration. Research on nanoparticles has gathered wide attention during the last decade because of their unusual and size dependent optical, magnetic, electronic, and chemical properties To fully utilize these properties, the size and shape must be well controlled. The method provides a convenient, low-cost, nontoxic route for the synthesis of nanostructures of oxide materials

Sample Preparation

Characterization

Results and discussion

Conclusion